CN210142525U

CN210142525U - Cable for building

Info

Publication number: CN210142525U
Application number: CN201921273914.XU
Authority: CN
Inventors: 姜东�; 王兆波; 潘茂龙; 黄延江; 蔡延玮; 王敬有; 石义涛; 刘传宗
Original assignee: Shandong Hualing Gable Co ltd
Current assignee: Shandong Hualing Gable Co ltd
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2020-03-13
Anticipated expiration: 2029-08-06

Abstract

The present disclosure provides a cable for building, including: the insulation line comprises at least one conductor, and a fire-resistant layer, an inner insulation layer and an outer insulation layer are sequentially arranged outside the conductor from inside to outside; the insulating wire core is sequentially provided with a first oxygen isolation layer, an armor layer, a second oxygen isolation layer and an outer sheath layer from inside to outside, and the insulating wire core has the characteristics of high flame retardant property and fire resistance.

Description

Cable for building

Technical Field

The utility model belongs to the cable field for the building, especially, relate to a cable for building.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

As traditional insulation and sheath materials of flame-retardant cables, most of the materials adopt flame retardants which are mixed by halogen-containing polymers and halogen-containing flame retardants, although the halogen-containing materials have excellent flame retardance, the halogen-containing materials can release a large amount of black smoke, toxic, corrosive and irritant gases due to thermal decomposition and combustion of the materials in the case of fire, the escape time of people is seriously influenced, people cannot find the escape route, people are easy to suffocate to cause injury and death, fire fighting and evacuation of people are prevented, and meanwhile, the surrounding equipment is damaged by the harmful gases, namely, the 'secondary injury'. At present, the low-smoke halogen-free flame-retardant cable is widely applied to places such as nuclear power stations, urban rails, subways, hospitals, high-rise buildings and the like.

The inventor finds that the common low-smoke halogen-free flame-retardant cable has the problems of low strength and poor flame-retardant performance, and can not meet the requirement of people on fire safety gradually.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present disclosure provides a cable for construction, which has high flame retardancy and fire resistance.

In order to achieve the purpose, the following technical scheme is adopted in the disclosure:

an architectural cable comprising:

the insulated cable comprises an insulated cable core and a cable core, wherein the insulated cable core comprises at least one conductor, and a fire-resistant layer, an inner insulating layer and an outer insulating layer are sequentially arranged outside the conductor from inside to outside; and a first oxygen-isolating layer, an armor layer, a second oxygen-isolating layer and an outer sheath layer are sequentially arranged outside the insulated wire core from inside to outside.

As an embodiment, the refractory layer is composed of a double layer of synthetic mica tape.

The advantage of above-mentioned scheme lies in, double-deck synthetic mica tape can protect the insulated wire core effectively not influenced by high temperature, improves the stability of insulated wire core work.

In one embodiment, the armor is formed from a double layer of galvanized steel.

The double-layer galvanized steel strip has the advantages that the external stress damage to the insulated wire core can be effectively reduced, and the working stability of the insulated wire core is improved.

In one embodiment, the first oxygen barrier layer is a single layer of ceramic silicon rubber.

In one embodiment, the second oxygen barrier layer is a single layer cerammed polyolefin structure.

In one embodiment, the outer sheath layer is a single layer of ultraviolet-proof low-smoke halogen-free flame-retardant polyolefin structure.

The beneficial effects of this disclosure are:

according to the building cable, the first oxygen-isolating layer, the armor layer, the second oxygen-isolating layer and the outer sheath layer are sequentially arranged outside the insulating wire core from inside to outside, and the flame retardant property of the cable is improved by utilizing the two oxygen-isolating layers; the insulating cable core is of a double-layer structure consisting of the inner insulating layer and the outer insulating layer, and the insulating property of the cable is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.

Fig. 1 is a schematic structural view of a cable for construction according to an embodiment of the present disclosure.

The cable comprises a conductor 1, a fire-resistant layer 2, an inner insulating layer 3, an outer insulating layer 4, a first oxygen-isolating layer 5, an armor layer 6, a second oxygen-isolating layer 7 and an outer sheath layer 8.

Detailed Description

The present disclosure is further described with reference to the following drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.

In the present disclosure, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present disclosure can be determined on a case-by-case basis by persons skilled in the relevant art or technicians, and are not to be construed as limitations of the present disclosure.

The cable for the building comprises an insulated wire core, wherein the insulated wire comprises at least one conductor. Three conductors are taken as an example below:

as shown in fig. 1, the building cable of the present embodiment includes:

the insulation line comprises three conductors 1, and a fire-resistant layer 2, an inner insulation layer 3 and an outer insulation layer 4 are sequentially arranged outside the conductors 1 from inside to outside; and a first oxygen-isolating layer 5, an armor layer 6, a second oxygen-isolating layer 7 and an outer sheath layer 8 are sequentially arranged outside the insulated wire core from inside to outside.

In a specific implementation, the conductor is made up of individual strands of copper.

The advantage of above-mentioned scheme lies in, double-deck synthetic mica tape can protect the insulated wire core effectively not influenced by high temperature, improves the stability of insulated wire core work. The fire-resistant layer adopts the synthetic mica tape that the combustion performance is good, can effectual protection insulating layer not receive the influence of conflagration, can protect inside insulating layer not receive high temperature when receiving the conflagration to influence.

In one embodiment, the armor is formed from a double layer of galvanized steel.

The ceramic silicon rubber has the characteristics of excellent fire resistance, flame retardance, low smoke, no toxicity and the like, the extrusion molding process is simple, the residue after combustion is a hard ceramic shell, the hard shell is not melted and dropped in a fire environment, and the line integrity test can be carried out by heating for 90min at the temperature of 950-1000 ℃ and cooling for 15min according to the regulation in GB/T19216.21-2003. The ceramic silicon rubber product has no special requirements on equipment, the processing technology is simple, the production can be realized by adopting the traditional silicon rubber processing equipment, the production efficiency is higher than that of the current production technology of the fire-resistant electric wire and cable, the production energy consumption can be reduced, and the cost can be saved.

It is understood that in other embodiments, the first oxygen-barrier layer may be implemented by a single layer of other oxygen-barrier materials, and those skilled in the art may set the first oxygen-barrier layer according to specific conditions, which will not be described in detail herein.

The ceramic polyolefin can rapidly generate a complete ceramic shell at the temperature of more than 650 ℃ or under the flame condition, the bending strength can reach 10MPa, the dielectric strength is more than 20kV/mm, and the ceramic shell generated by the volume resistivity is higher than 5 multiplied by 1013 omega. cm. does not crack or drip, has excellent electrical isolation performance, has excellent oxygen isolation and heat insulation effects, can effectively isolate the invasion of high-temperature flame to the interior of a line, delays the decomposition of internal materials, avoids the fusing of a conductor in the flame, and ensures the smoothness of the line under the fire condition. And the material adopts common polyolefin cable material processing equipment, is formed in one step, has simple process and can be produced continuously.

It is understood that in other embodiments, the second oxygen-barrier layer may be implemented by a single layer of other oxygen-barrier materials, and those skilled in the art may set the second oxygen-barrier layer according to specific conditions, which will not be described in detail herein.

The oversheath layer adopts anti ultraviolet low smoke and zero halogen flame retardant polyolefin material for the cable can be for a long time under the sun insolate work and does not influence the cable and normally work, and low smoke and zero halogen material can not release the toxic gas in the burning, environmental protection more.

It is understood that in other embodiments, the outer sheath layer may be implemented by a single layer structure made of other environmentally friendly materials, and those skilled in the art can set the outer sheath layer according to specific conditions, which will not be described in detail herein.

According to the cable for the building, the first oxygen-isolating layer, the armor layer, the second oxygen-isolating layer and the outer sheath layer are sequentially arranged outside the insulating wire core from inside to outside, and the flame retardant property of the cable is improved by utilizing the two oxygen-isolating layers; the insulating cable core is of a double-layer structure consisting of the inner insulating layer and the outer insulating layer, and the insulating property of the cable is improved.

The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. An architectural cable, comprising:

2. The architectural cable of claim 1, wherein the fire resistant layer is comprised of a double layer synthetic mica tape.

3. An architectural cable according to claim 1, wherein said armor layer is comprised of a double layer of galvanized steel tape.

4. The architectural cable of claim 1 wherein the first oxygen barrier layer is a single layer of cerammed silicone rubber structure.

5. The architectural cable of claim 1 wherein the second oxygen barrier layer is a single layer cerammed polyolefin structure.

6. The architectural cable of claim 1 wherein the outer jacket layer is a single layer uv protected low smoke zero halogen flame retardant polyolefin structure.